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北京石油化工学院2026年研究生招生接收调剂公告
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chemistrylover

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[交流] 【求助】合成水溶性氧化锌量子点的问题

我重复J. Am. Chem. Soc. 2007, 129, 16029-16033制备水溶性量子点过程中,当所有原料混合起来搅拌的时候就有絮状的白色物质出现,是什么原因?合成量子需要注意哪些问题。谢谢!
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firebolt

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chemistrylover(金币+1): 2010-03-26 14:30
是这么回事,后来应该是没订正
4楼2010-01-27 08:42:07
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合成过程如下:
To prepare sample S1, 26.3 mg of DEA were
dissolved into 50 mL of distilled water to obtain a 5.0 mM DEA
solution, and 37.2 mg of zinc nitrate hexahydrate were dissolved into
50 mL of distilled water to form a 2.5 mM zinc nitrate solution; the
above two solutions and 0.35 mmol of OA were added into a reactor
together. After the mixture stirred at room temperature for 30 min and
the temperature was increased to 80 °C with continuous stirring for
another 2.0 h, stable ZnO nanoparticles are formed in the solution.
The as-prepared dispersion was filtered, and then the dispersion was
centrifuged and as-obtained product was redispersed subsequently with
1-butanol, 1-propanol, and ethanol to remove any unreacted molecules.
Finally, the QDs were obtained by centrifugation and then dispersed
in water for further characterization.
2楼2009-04-02 16:09:22
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wdwsnnu(金币+0):不会吧,他不负责任了 1-26 23:06
chemistrylover(金币+2): 2010-03-26 14:29
别重复那个了,那是我们学校的人做的。听说买的试剂被一个公司弄错了,所以文章上有一个试剂不对,重复不出来的
3楼2010-01-26 21:32:12
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